mmc: core: Add retry mechanism for MMC resume failure

mmc: core: Add retry mechanism for MMC resume failure

Enhance the error handling/recovery path during eMMC resume by
adding retry mechanism and by adding additional error messages
to failure cases. This may help some of the bad parts which fail
to resume sporadically.

Change-Id: I895068edb487e6a44205e0769342b2ec2c89c876
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
[merez@codeaurora.org: fix conflicts due to addition of __mmc_resume
in 3.14 and different bus speed implementation]
Signed-off-by: Maya Erez <merez@codeaurora.org>
[venkatg@codeaurora.org: Fix args for mmc_power_up and
mmc_select_voltage to use with 3.14 kernel]
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
[subhashj@codeaurora.org: fixed trivial merge conflicts]
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>